This parameter is the only parameter in the Lorentz factor. Cerenkov ("CHAIR"-en-kov) radiation is produced by objects exceeding this parameter. This parameter is equal to one over the square root of the product of the permittivity of free space and permeability of free space. It is squared and multiplied by mass in an equation for rest energy developed by Einstein. For 10 points, name this theoretical limit on the speed of an object, which in a vacuum is equal to three 
This parameter is the only parameter in the Lorentz factor. Cerenkov ("CHAIR"-en-kov) radiation is produced by objects exceeding this parameter. This parameter is equal to one over the square root of the product of the permittivity of free space and permeability of free space. It is squared and multiplied by mass in an equation for rest energy developed by Einstein. For 10 points, name this theoretical limit on the speed of an object, which in a vacuum is equal to three times ten to the eighth meters per second.
This parameter is the only parameter in the Lorentz factor. Cerenkov ("CHAIR"-en-kov) radiation is produced by objects exceeding this parameter.
speed of {light} [or {c}]